I do not use my CW very often (28 hours cut time) because it takes at least 2 hours to get past the error messages. I finally solved one problem but now I have another. Lately when I put a board in it gets erratic when measuring the board. When the board reaches the last foot you can hear the machine bog down and then it pushes the board back and forth, jerky, and finally stops and has a tracking error message. I have read the troubleshooting and checked everything. Seems to be OK at the middle of the measurement but gets weird toward the end.

1 The corner posts are OK.
2 Sandpaper belts are OK, like new and no rips, etc. and perfectly flat.
3 I can roll the belts by hand. Tough but able to make them roller.
4 Cables are OK
5 The board is flat.
6 Two layers of masking tape on the edge did not help so I tried three.
7 Brass roller is OK.
8 Washer on brass roller is OK.
9 Compression rollers OK. I can hear the click. When the board is moving through the machine I can see both rollers turning.
10 The board is 12" with 3.5" on each end, using a sled.
11 Error message after Abort: E49-0320 Tracking Roller Failed.
12 The squaring plate is against the board and the board has parallel sides.

Sometimes if I keep trying it will eventually get rid of it's attitude and work but this time it's being stubborn. This is an A machine.
Thanks ahead of time.